Downgrading firmware?

Discussion in 'Jailbreaks and iOS Hacks' started by LoneWolf121188, Aug 21, 2007.

  1. LoneWolf121188 macrumors 6502a

    Joined:
    Jun 7, 2007
    Location:
    Longmont, CO
    #1
    Just wondering if anyone's figured out how to downgrade firmware yet?
     
  2. sJv macrumors regular

    Joined:
    Jul 11, 2007
    Location:
    Sierra Foothills, CA
    #2
    Doing a restore should put 1.0.0 back on the iPhone, I believe.

    -steve
     
  3. LoneWolf121188 thread starter macrumors 6502a

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    Jun 7, 2007
    Location:
    Longmont, CO
    #3
    No, because when you restore, it downloads firmware from the apple server.
     
  4. sJv macrumors regular

    Joined:
    Jul 11, 2007
    Location:
    Sierra Foothills, CA
    #4
    I thought it downloaded 1.0.0 from the server, and not the latest? That was my impression since it appears folks with hacked phones have to do a restore followed by the update. If it was downloading the newest release as part of a restore, then the update would not be necessary.

    Basically, there is one base 92MB release, with 2 much smaller patch releases.

    Anyone know for sure?

    -steve
     
  5. logandzwon macrumors 6502a

    Joined:
    Jan 9, 2007
    #5
    nope, each release they update the 90 meg file. You machine downloads a new file after every version update. Not, just the update.

    In other words if you restored your phone under 1.01 and downloaded the 90 meg file, then 5 minutes later updated it again and 1.02 just came out you would download another 90 megs. It would be downloading 1.02.

    Very freaking annoying when this happens while your at the apple store and have to wait an hour for them to download it.
     
  6. sJv macrumors regular

    Joined:
    Jul 11, 2007
    Location:
    Sierra Foothills, CA
    #6
    Thanks for the clarification!

    -steve

     
  7. LoneWolf121188 thread starter macrumors 6502a

    Joined:
    Jun 7, 2007
    Location:
    Longmont, CO
    #7
    Correct, although there are smaller updates for 1.00 to 1.01 and 1.01 o 1.02. The new 92MB update file includes the entire firmware, the smaller (3MB or so) only includes the updates. People with modded phones have to download the big file because when you do a restore, it restores the whole firmware.
     
  8. b257177 macrumors regular

    Joined:
    Jul 25, 2007
    #8
    You might check VersionTracker, which sometimes maintains previous versions of the software. Not sure if Apple iPhone updates are being maintained in this way, as other app's are on VT, but worth a shot.
     

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